Climate change will increasingly put food supplies at risk, while opening up some new areas to agriculture. That's the gist of a leaked new draft UN report on climate change impacts. Host Marco Werman talks about the frontiers of our changing food supply with report co-author David Lobell of Stanford University.

The effect of this summer's drought in the United States may well be felt around the world soon. That's because the U.S. is the world's biggest corn exporter. As harvests fall and prices rise, many of world's poor will feel the squeeze.

The effect of this summer's drought in the United States may well be felt around the world soon. That's because the U.S. is the world's biggest corn exporter. As harvests fall and prices rise, many of world's poor will feel the squeeze.

Climate change will increasingly put food supplies at risk, while opening up some new areas to agriculture. That's the gist of a leaked new draft UN report on climate change impacts. Host Marco Werman talks about the frontiers of our changing food supply with report co-author David Lobell of Stanford University.

The effect of this summer's drought in the United States may well be felt around the world soon. That's because the U.S. is the world's biggest corn exporter. As harvests fall and prices rise, many of world's poor will feel the squeeze.

Climate change will increasingly put food supplies at risk, while opening up some new areas to agriculture. That's the gist of a leaked new draft UN report on climate change impacts. Host Marco Werman talks about the frontiers of our changing food supply with report co-author David Lobell of Stanford University.